How Close Are We to Foldable Displays?

I am looking forward to meet with Polymer Vision Ltd. at 3GSM / Mobile World Congress in Barcelona. The company is a Philips spin-off working on foldable or rather rollable displays. Their approach is to apply organic particles on a thin plastic plastic foil which is then used as a display. A report (in German) on "Der Spiegel" says they will show first production models of a mobile phone and ebook reader hybrid during 3GSM. Here’s a video that shows their technology: